Auth bypass in Nopsolutions Nopcommerce
CVE-2026-117605
nopCommerce before 5.00.0 contains a missing authorization vulnerability in the admin ProductController RelatedProductAddPopup, CrossSellProductAddPopup and AssociatedProductAddPopup handlers that fail to verify parent product ownership. Authenticated vendors can submit another vendor's product id as model.ProductId to inject their products into the victim's related-products, cross-sell and grouped-product listings.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (17.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
The 30-day trend appears once there are two daily scores.
Affected products
Weakness classification (CWE)
References
- github.com/nopSolutions/nopCommerce/issues/8417 (issue-tracking)
- github.com/nopSolutions/nopCommerce/commit/fbdbe18d43b42b7e269f7118cfc9533349ed… (patch)
- github.com/nopSolutions/nopCommerce/blob/918444773367deb734b93d3ad80e17325d6c14… (technical-description)
- github.com/nopSolutions/nopCommerce/releases/tag/release-5.00.0 (release-notes)
- github.com/nopSolutions/nopCommerce (product)
- www.vulncheck.com/advisories/nopcommerce-before-5.00.0-missing-authorization-vi… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-117605?
- CVE-2026-117605 is a medium-severity vulnerability in Nopsolutions Nopcommerce, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2026-10-28.
- How severe is CVE-2026-117605?
- Medium severity. CVSS v3 base score is 4.3 out of 10.